Finding the Fourth Proportional to 82,361.48, 123,678.86 and 51,393.56

Step by Step Solution

1. Step 1: Write the proportion equation
   82,361.48 : 123,678.86 = 51,393.56 : x
2. Step 2: Convert to fraction form
   82,361.48/123,678.86 = 51,393.56/x
3. Step 3: Cross multiply
   82,361.48x = 123,678.86 × 51,393.56
4. Step 4: Simplify right side
   82,361.48x = 6,356,296,036.78
5. Step 5: Solve for x
   x = 6,356,296,036.78/82,361.48
6. Step 6: Final answer
   x = 77,175.60